pulbri

Pulbri is a fictional mineral that appears in speculative fiction and tabletop role-playing settings. It is commonly described as a high-density energy storage material and is often used as a power source or catalyst for advanced devices. Because pulbri is not a real substance, there is no single canonical definition; its properties and origin vary by author and work.

In many depictions, pulbri crystals are transparent or pale blue with a glassy luster. They are brittle and fracture easily, but fragments can store and transfer energy. When exposed to specific frequencies or fields, pulbri may emit light or release bursts of power, and handling typically requires containment to prevent uncontrolled discharge.

Pulbri frequently functions as a plot device around resource scarcity, technological advancement, or magical integration. Some stories describe it as a naturally occurring mineral formed under extreme geology or alien conditions, while others present it as an engineered material produced in reactors or laboratories. Its supply chains, refinement, and regulation are often part of the world-building.

Etymology varies by setting; in some worlds the name is ancient and meaning-bearing, in others it is a modern coinage. Because pulbri is fictional, any technical specifics belong to the individual work and are not universal facts.